/* ---------------- Base ---------------- */
* { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  --bg: #f4f3ff;
  --text: #15131f;
  --text-soft: #6b6b7b;
  --card: #ffffff;
  --border: rgba(20, 10, 60, 0.08);
  --grad-a: #6b5bff;
  --grad-b: #c44bff;
  --grad-c: #ff5ba8;
  --grad-d: #ffb347;
  --shadow: 0 10px 40px rgba(107, 91, 255, 0.14);
  --shadow-lg: 0 30px 80px rgba(107, 91, 255, 0.28);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b0a12;
    --text: #f5f5f7;
    --text-soft: #a0a0b0;
    --card: #17151f;
    --border: rgba(255, 255, 255, 0.09);
    --shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
    --shadow-lg: 0 30px 80px rgba(0, 0, 0, 0.65);
  }
}

html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Text', 'Helvetica Neue', sans-serif;
  background: var(--bg);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
  line-height: 1.55;
  overflow-x: hidden;
  position: relative;
}

a { color: inherit; text-decoration: none; }

/* animated multi-color gradient text */
.grad {
  background: linear-gradient(120deg, var(--grad-a), var(--grad-b), var(--grad-c), var(--grad-d), var(--grad-a));
  background-size: 300% 100%;
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  animation: hue 6s linear infinite;
}
@keyframes hue {
  to { background-position: 300% 0; }
}

.cursor-blink {
  animation: blink 1.1s steps(1) infinite;
  color: var(--grad-b);
}
@keyframes blink { 50% { opacity: 0; } }

/* ---------------- Floating blobs ---------------- */
.blob {
  position: fixed;
  border-radius: 50%;
  filter: blur(90px);
  opacity: 0.55;
  z-index: 0;
  pointer-events: none;
}
.blob-1 { width: 460px; height: 460px; background: var(--grad-a); top: -150px; right: -100px; animation: float 14s ease-in-out infinite; }
.blob-2 { width: 420px; height: 420px; background: var(--grad-c); bottom: 8%; left: -160px; animation: float 18s ease-in-out infinite reverse; }
.blob-3 { width: 360px; height: 360px; background: var(--grad-b); top: 40%; right: -120px; animation: float 22s ease-in-out infinite; }
@keyframes float {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(50px, 30px) scale(1.1); }
  66% { transform: translate(-30px, 50px) scale(0.95); }
}

/* ---------------- Sparkles ---------------- */
.sparkle-layer { position: fixed; inset: 0; pointer-events: none; z-index: 50; }
.sparkle {
  position: fixed;
  font-size: 20px;
  pointer-events: none;
  animation: sparkle-pop 1s ease-out forwards;
}
@keyframes sparkle-pop {
  0% { transform: translate(0, 0) scale(0) rotate(0deg); opacity: 1; }
  100% { transform: translate(var(--dx), var(--dy)) scale(1.4) rotate(var(--rot)); opacity: 0; }
}

/* ---------------- Floating word chips ---------------- */
.word-stream { position: fixed; inset: 0; pointer-events: none; z-index: 0; overflow: hidden; }
.word-chip {
  position: absolute;
  bottom: -40px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 14px;
  border-radius: 999px;
  background: var(--card);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  font-size: 14px;
  font-weight: 600;
  white-space: nowrap;
  opacity: 0;
  animation: drift-up var(--dur, 11s) linear forwards;
}
.word-chip .bad {
  color: var(--text-soft);
  text-decoration: line-through;
  text-decoration-color: var(--grad-c);
}
.word-chip .arrow {
  color: var(--grad-b);
  font-weight: 800;
}
.word-chip .good {
  background: linear-gradient(120deg, var(--grad-a), var(--grad-b));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
@keyframes drift-up {
  0% { transform: translateY(0) scale(0.9); opacity: 0; }
  10% { opacity: 0.85; }
  88% { opacity: 0.85; }
  100% { transform: translateY(-115vh) scale(1); opacity: 0; }
}

/* typo-fix highlight on the hero headline */
.fixing {
  background: linear-gradient(120deg, rgba(196, 75, 255, 0.35), rgba(255, 91, 168, 0.35));
  border-radius: 6px;
  box-shadow: 0 0 0 4px rgba(196, 75, 255, 0.18);
  transition: background 0.3s, box-shadow 0.3s;
}

/* ---------------- Reveal on scroll ---------------- */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s ease, transform 0.7s cubic-bezier(0.2, 0.8, 0.2, 1);
  transition-delay: var(--d, 0s);
}
.reveal.in { opacity: 1; transform: translateY(0); }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; }
  .grad, .cursor-blink, .blob { animation: none; }
}

/* ---------------- Nav ---------------- */
.nav {
  position: relative;
  z-index: 2;
  max-width: 1080px;
  margin: 0 auto;
  padding: 22px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 17px; }
.brand img { width: 36px; height: 36px; border-radius: 9px; transition: transform 0.3s; }
.brand:hover img { transform: rotate(-12deg) scale(1.08); }
.nav-links { display: flex; align-items: center; gap: 26px; font-size: 15px; }
.nav-links a { color: var(--text-soft); transition: color 0.2s; }
.nav-links a:hover { color: var(--text); }

@media (max-width: 620px) {
  .nav-links a:not(.btn) { display: none; }
}

/* ---------------- Buttons ---------------- */
.btn {
  display: inline-block;
  padding: 14px 28px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 15px;
  transition: transform 0.15s ease, box-shadow 0.25s ease, background 0.2s;
  cursor: pointer;
  position: relative;
}
.btn-primary {
  background: linear-gradient(120deg, var(--grad-a), var(--grad-b), var(--grad-c));
  background-size: 200% 100%;
  color: #fff;
  box-shadow: var(--shadow);
  animation: btn-shimmer 4s linear infinite;
}
@keyframes btn-shimmer { to { background-position: 200% 0; } }
.btn-primary:hover { transform: translateY(-3px) scale(1.03); box-shadow: var(--shadow-lg); }
.btn-primary:active { transform: translateY(-1px) scale(0.99); }
.btn-ghost {
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--text);
}
.btn-ghost:hover { transform: translateY(-3px); }

/* ---------------- Hero ---------------- */
main { position: relative; z-index: 1; }

.hero {
  max-width: 820px;
  margin: 0 auto;
  padding: 50px 24px 40px;
  text-align: center;
}
.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 18px;
  border-radius: 999px;
  background: var(--card);
  border: 1px solid var(--border);
  font-size: 14px;
  color: var(--text-soft);
  margin-bottom: 26px;
  box-shadow: var(--shadow);
}
.badge-dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: #28c840;
  box-shadow: 0 0 0 0 rgba(40, 200, 64, 0.6);
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(40, 200, 64, 0.6); }
  70% { box-shadow: 0 0 0 8px rgba(40, 200, 64, 0); }
  100% { box-shadow: 0 0 0 0 rgba(40, 200, 64, 0); }
}
.hero h1 {
  font-size: clamp(44px, 7.5vw, 78px);
  line-height: 1.03;
  letter-spacing: -0.035em;
  font-weight: 800;
  margin-bottom: 22px;
}
.sub {
  font-size: clamp(17px, 2.4vw, 21px);
  color: var(--text-soft);
  max-width: 600px;
  margin: 0 auto 34px;
}
.sub em { font-style: italic; color: var(--text); font-weight: 600; }

.cta-row {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 28px;
}

.shortcut-hint {
  font-size: 14px;
  color: var(--text-soft);
  margin-bottom: 56px;
}
.keys { display: inline-flex; gap: 4px; margin: 0 4px; }
kbd {
  display: inline-block;
  font-family: inherit;
  font-size: 0.92em;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 8px;
  background: var(--card);
  border: 1px solid var(--border);
  box-shadow: 0 3px 0 var(--border);
  color: var(--text);
}
kbd[data-key].press {
  animation: keypress 0.32s ease;
}
@keyframes keypress {
  0% { transform: translateY(0); box-shadow: 0 3px 0 var(--border); }
  40% { transform: translateY(3px); box-shadow: 0 0 0 var(--border); background: linear-gradient(120deg, var(--grad-a), var(--grad-b)); color: #fff; }
  100% { transform: translateY(0); box-shadow: 0 3px 0 var(--border); }
}

/* ---------------- Demo window ---------------- */
.demo { perspective: 1400px; }
.demo-window {
  max-width: 560px;
  margin: 0 auto;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  text-align: left;
  transition: transform 0.3s ease;
}
.demo-window:hover { transform: translateY(-4px) rotateX(2deg); }
.demo-bar {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 13px 16px;
  border-bottom: 1px solid var(--border);
}
.dot { width: 12px; height: 12px; border-radius: 50%; }
.dot.red { background: #ff5f57; }
.dot.yellow { background: #febc2e; }
.dot.green { background: #28c840; }
.demo-title {
  margin-left: auto;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-soft);
  padding: 3px 10px;
  border-radius: 999px;
  background: rgba(138, 125, 255, 0.14);
}
.demo-body { padding: 22px 24px 26px; min-height: 220px; }
.demo-label {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-soft);
  margin-bottom: 6px;
}
.demo-before {
  color: var(--text-soft);
  font-size: 16px;
  min-height: 48px;
}
.demo-zap {
  text-align: center;
  font-weight: 800;
  font-size: 13px;
  letter-spacing: 0.05em;
  margin: 18px auto;
  width: fit-content;
  padding: 6px 14px;
  border-radius: 999px;
  color: #fff;
  background: linear-gradient(120deg, var(--grad-a), var(--grad-b));
  box-shadow: var(--shadow);
}
.demo-zap.zap { animation: zap 0.6s ease; }
@keyframes zap {
  0% { transform: scale(1); }
  30% { transform: scale(1.25) rotate(-3deg); filter: brightness(1.3); }
  100% { transform: scale(1); }
}
.demo-after {
  font-size: 17px;
  font-weight: 500;
  color: var(--text);
  min-height: 50px;
}
.type-caret::after {
  content: '▍';
  color: var(--grad-b);
  animation: blink 1s steps(1) infinite;
}

/* ---------------- Section headers ---------------- */
section h2 {
  text-align: center;
  font-size: clamp(28px, 4.5vw, 42px);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 40px;
}

/* ---------------- Steps ---------------- */
.steps { max-width: 1000px; margin: 0 auto; padding: 80px 24px; }
.step-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.step-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 30px 26px;
  box-shadow: var(--shadow);
  transition: transform 0.2s ease;
}
.step-card:hover { transform: translateY(-6px); }
.step-num {
  width: 42px; height: 42px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 12px;
  background: linear-gradient(120deg, var(--grad-a), var(--grad-b));
  color: #fff;
  font-weight: 800;
  font-size: 18px;
  margin-bottom: 16px;
}
.step-card h3 { font-size: 19px; margin-bottom: 8px; }
.step-card p { color: var(--text-soft); font-size: 15px; }

/* ---------------- Features ---------------- */
.features { max-width: 1000px; margin: 0 auto; padding: 20px 24px 80px; }
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.feature {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 28px 24px;
  transition: transform 0.18s ease, box-shadow 0.2s ease;
}
.feature:hover { transform: translateY(-6px) scale(1.02); box-shadow: var(--shadow); }
.feature .emoji {
  font-size: 34px;
  margin-bottom: 12px;
  display: inline-block;
  transition: transform 0.3s;
}
.feature:hover .emoji { animation: wiggle 0.6s ease; }
@keyframes wiggle {
  0%, 100% { transform: rotate(0); }
  25% { transform: rotate(-14deg) scale(1.15); }
  75% { transform: rotate(14deg) scale(1.15); }
}
.feature h3 { font-size: 18px; margin-bottom: 7px; }
.feature p { color: var(--text-soft); font-size: 15px; }
.feature code {
  background: rgba(138, 125, 255, 0.16);
  color: var(--grad-b);
  padding: 1px 6px;
  border-radius: 6px;
  font-size: 0.9em;
}

@media (max-width: 760px) {
  .step-grid, .feature-grid { grid-template-columns: 1fr; }
}

/* ---------------- Final CTA ---------------- */
.final-cta {
  max-width: 700px;
  margin: 0 auto 40px;
  padding: 60px 30px;
  text-align: center;
  background: linear-gradient(135deg, rgba(107, 91, 255, 0.12), rgba(255, 91, 168, 0.1));
  border: 1px solid var(--border);
  border-radius: 28px;
}
.final-icon {
  width: 80px; height: 80px;
  border-radius: 18px;
  margin-bottom: 18px;
  box-shadow: var(--shadow);
  animation: bob 3.5s ease-in-out infinite;
}
@keyframes bob {
  0%, 100% { transform: translateY(0) rotate(0); }
  50% { transform: translateY(-10px) rotate(3deg); }
}
.final-cta h2 { margin-bottom: 10px; }
.final-cta p { color: var(--text-soft); margin-bottom: 26px; }

/* ---------------- Footer ---------------- */
footer {
  text-align: center;
  padding: 40px 24px;
  color: var(--text-soft);
  font-size: 14px;
}
footer a { color: var(--grad-b); font-weight: 600; }